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gh-128884: Update BOLT optimization option to follow the latest version. #160122

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Merged
corona10 merged 2 commits into from
Oct 22, 2026
+17 −2
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gh-128884: Update BOLT optimization option to follow the latest version. #160122

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d512b29
gh-128884: Update BOLT optimization option to prevent crash
corona10 Oct 21, 2026
30016d1
Update
corona10 Oct 22, 2026
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2 changes: 2 additions & 0 deletions Misc/NEWS.d/next/Build/2026-10-21-14-52-56.gh-issue-128884.Xs5jK-.rst
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Original file line number Diff line number Diff line change
@@ -0,0 +1,2 @@
Fix ``--enable-bolt`` build failures on AArch64 with recent LLVM: pass
``-frame-opt=hot`` only on x86. Patch by Donghee Na.
9 changes: 8 additions & 1 deletion configure
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8 changes: 7 additions & 1 deletion configure.ac
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Expand Up @@ -2288,6 +2288,12 @@ AC_ARG_VAR(
AC_MSG_CHECKING([BOLT_APPLY_FLAGS])
if test -z "${BOLT_APPLY_FLAGS}"
then
dnl The frame optimizer is only implemented for x86. BOLT 22 and newer
dnl refuse to run it on other architectures.
AS_CASE([$host_cpu],
[x86_64], [bolt_frame_opt_flags="-frame-opt=hot"],
[bolt_frame_opt_flags=""]
)
AS_VAR_SET(
[BOLT_APPLY_FLAGS],
[m4_normalize("
Expand All @@ -2305,7 +2311,7 @@ then
-indirect-call-promotion=all
-dyno-stats
-use-gnu-stack
-frame-opt=hot
${bolt_frame_opt_flags}
")]
)
fi
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